SDR ASAA2023021741993

Service difficulty report · Unknown · Boeing 7379

Difficulty date: February 17, 2023
Submitted: February 20, 2023
Operation: Air carrier
Aircraft: N976AK
Make and model: Boeing 7379
Aircraft serial: 64967
Aircraft time: 2,731 hours, 832 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Unknown
Part number: UNKNOWN
Condition: Unknown
Location: Unknown
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

TRANSIENT DUAL FMC FAIL WITH DUAL VTR ANNUNCIATION AND NO FMC PROMPT ON BOTH MCDU MENUS DURING CRUISE, BOTH FMCS RESTORED TO NORMAL OPERATION AFTER APPROXIMATELY 25 SECONDS. GROUNDED - YES. PERFORMED FMC OPERATIONAL TEST, OPS CHECK GOOD IAW B737-9 AMM 34-61-00-710-801.

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